Railroad hopper car with plow

ABSTRACT

This invention relates to an ore plow which displaces the discharged lading from the surface of railway tracks to prevent a buildup of the lading which could result in a derailment. The ore plow is pivotally suspended beneath the car and operates in conjunction with the door operating levers, being lowered into position to clear the tracks when the hopper doors are opened and returning to an inoperative or raised position upon closing the hopper doors. The plow has a lower edge to clear ore off the rails and has plow deflecting members to divert ore away from the rails, or in alternate form plow deflecting member to divert the ore in between the rails.

United States Patent [451 July 18, 1972 1541 RAILROAD HOPPER CAR WITHPLOW [72] Inventor: Ernest J. Nagy, Mumter, Ind.

[73] Assignee: Pullman Incorporated, Chicago, Ill.

[22] Filed: Dec. 12, 1969 [21] App1.No.: 884,536

[52] U.S. 37/36, 37/104, 105/287 [51] Int. Cl ..B6lrl 7/00 [58]neldolSeereh ..17l/16; 37/19,29, 30, 35, 37/36, 104; 104/1, 2, 3, 279;105/287, 248

[56] References Cited UNITED STATES PATENTS 2,989,930 6/1961 Flowers..104/l X 1,019,811 3/1912 Lister ....37/30 676,385 6/1901 Hagg ..37/362,108,134 2/1938 McNulty ..37/36 Pn'mary Examiner-Gerald M. ForlenzaAssistant Examiner-Jerold M. Forsberg Attorney-Hilmond O. Vogel andWayne Morris Russell [57] ABSTRACT This invention relates to an ore plowwhich displaces the discharged lading from the surface of railway tracksto prevent a buildup of the lading which could result in a derailment.The ore plow is pivotally suspended beneath the car and operates inconjunction with the door operating levers, being lowered into positionto clear the tracks when the hopper doors are opened and returning to aninoperative or raised position upon closing the hopper doors. The plowhas a lower edge to clear ore off the rails and has plow deflectingmembers to divert ore away from the rails, or in alternate form plowdeflecting member to divert the ore in between the rails.

Patented July 18, 1972 3,677,191

3 Sheets-Sheet l I N VENTU'? ERNEST J. NAGY BY A 2P ATT'Y.

Patented July 18, 1972 3,677,191

3 Sheets-Sheet :1

INVENTOR ERNEST J. NAGY BYU% Wm/M ATT Y.

Patented July 18, 1972 3,677,191

3 Sheets-Sheet 3 ATT'Y.

IN VE NTUR ERNEST J NAGY RAILROAD HOPPER CAR WI'III PLOW SUMMARY Theprimary object of the present invention is to provide an improved oreplow arrangement in clearing railway tracks during and after dischargeof a railway hopper car. The plow is pivotally connected beneath therailway car on an axis transverse to the longitudinal center line of thecar and is lowered and raised upon opening and closing of the hopper cardischarge doors. Upon opening of the discharge doors the plow is loweredto the surface of the tracks and movement of the railway car will allowthe plow to displace discharge material from the tracks ahead of therailway car wheels. The plow is raised and lowered by the the movementof a lever which moves in conjunction with the door opening levers.

A purpose of the invention is to provide a plow which will removedischarged material from very close to the surface of the tracks whileat the same time override immovable obstructions such as misalignedadjacent sections of track.

A further purpose of the present invention is to provide a plow whichwould be in position to remove discharged lading from the surface of thetracks or rails only at such time that the lading would be present,namely, when the hopper car doors are open.

Still another object is to provide an ore plow in one form withdeflecting members to divert the ore away from the rails and in analternate form with deflecting members to divert the ore between therails.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevation of arailway hopper car employing the present invention in a position betweenthe hopper discharge doors and the car wheels;

FIG. 2 is a partial transverse sectional view taken showing the ore plowwith diverging deflecting members in operative lowered position;

FIG. 3 is a side elevational view showing the ore plow with divergingdeflecting members in its operative or lowered position;

FIG. 4 is a side elevational view of the ore plow in its inoperative orraised position;

FIG. 5 is a top plan view of the plow with diverging deflecting membersand taken along line 5-5 of FIG. 2;

FIG. 6 is a partial top plan view of an alternate form of the plow withconverging deflecting members to enable the plow to deflect lading tothe inside of the tracks;

FIG. 7 is a transverse front elevational view taken along lines 7- 7 ofFIG. 6; and

FIG. 8 is an end elevational view taken along lines B--8 of FIG. 7.

DETAILED DESCRIPTION With reference now to the drawings and inparticular with reference to FIG. I there is shown a railway hopper car10 utilizing the ore plows 30 at each end thereof. The hopper car I0 hassides I] and hopper ends 12 and partition Ila which together with thehopper doors l6 define hoppers 15. The hopper doors 16 are pivoted on anaxis which is parallel with the longitudinal center line of the hoppercar. The hoppers are supported by side sills I3 and center sills 14. Thecenter sill 14 is attached to the trucks l8 which contain the car wheelswhich ride on the rails I9. The hopper car 10 is couplable at both endsby means of the couplers 2]. The hopper car doors l6 are opened andclosed by the power cylinders 24 which operate on the doors 16 by thedoor operating mechanism 17. These door operating mechanisms provide aconnection between both hopper doors l6 and allow for sequential openingof the doors. The door mechanisms 17 are illustrated in detail in theco-pending patent application to Herman A. Aquino, Ser. No. 777,430,filed Nov. 20, I968 now U.S. Pat. No. 3,596,608 issued Aug. 3, I971 andherein incorporated by reference. The hopper doors 16 include an innermaster door connected by drive links to outer slave door, the masterdoor having an overlapping edge sealing the lower edge of the slave doorand supporting the slave door through the door arms connecting themaster door with the longitudinal drive means or the operating levers25, the door arms between the master door and the operating levers 25having an over center locked position with respect to the levers 25 inthe hopper door closed position. The end power cylinders 24 operate thedrive links 23 of the door operating mechanisms l7 to operate the dooroperating levers 25 to open and close the doors. The outer end dooroperating levers 25, as illustrated. at locations 240, in FIG. I, arenot only connected to and used in opening and closing the hopper cardoors 16, but also connected with the plow 30 by means of the leverconnecting linkage 54. As viewed in FIG. 1, the levers 25 which are inthe middle of the car and are therefore intermediate levers, do not havea direct connection by the link eye 58 of the link 57 and the link 56and the link eye 55 with the plow, although these intermediate levers 25do connect with the outer end levers 25 which are at locations 240 and24a as shown in said FIG. I.

The plow 30 is pivotally suspended beneath the car by means of the plowsupport 31 and the plow pivot bracket 33. Referring to FIG. 2, it isshown that the plow support 3l is fixedly attached to the under side 32of center sill 14. The plow support 31 comprises two spaced upper pivotlugs 36,36 fixedly attached to the under side of the plow support bottomplate 4]. On the upper side of the bottom plate 4] are affixed twolongitudinally spaced transverse members 42 and having vertical members43 attached in a vertical and perpendicular manner to their outer ends.The vertical support members 44 as best illustrated in FIGS. 2 and 3communicate with the under side 32 of the center sill l4 and the bottomplate 41 in a perpendicular arrangement to the vertical members 43 andin a transverse line with the transverse members 42. All plow supportmembers of plow support 3] are fixedly attached to each other byweldments to form a rigid structure.

Beneath and connected to the plow support 3] are the plow pivot brackets33. The brackets 33 connect with the lower pivot lugs 39 of the plow 30and the upper pivot lugs 36 of the plow support 31 by means of pivotpins 40 and 37 respectively. Each bracket 33 includes plates 45 spacedon each side of the upper lug 36 and having an upper opening 46 in eachplate 45 adjacent a corresponding opening in the lugs 36 for insertionof the upper pivot pins 37 to form the upper pivot 34. The upper pivotpins 37 are fixedly attached to the plates 45 by means of weldments, asis the projection 48.

Opposite the upper pivot pin apertures 46 of plates 45 in asubstantially vertical direction are the lower openings 47 of the endplates 45 (see FIG. 3). These openings 47 are adjacent correspondingopenings 39a in the lower pivot lugs 39. The lower pivot pin 40 isinserted through the lower openings 47 in the plates 45 and the pin 40extends into the openings 39a of the lower pivot lugs 39. The lowerpivot pins 40 are fixedly attached by means of weldments in theapertures 47 of plates 45.

Referring to FIG. 5 it is thus shown that the lower pivot lugs 39 arefixedly attached to the plow 30 on the back SI of its plow blade 49. Theplow blade 49 includes a transverse intermediate portion 49a for movinglading piled between the tracks, and outer rearwardly divergingly angleddeflecting parts 49b for moving and displacing lading such as ore orcoal from the surface of the track rails. A bottom member 50 of the plow30 is attached in a perpendicular manner to the plow blade 49 andincludes a pair of laterally spaced lips or wipers 52 as bestillustrated in FIG. 4. Each lip or rail cleaner 52 is angled upward to aterminal end from the plow bottom enabling the plow to overrideobstructions on the track. When the plow is in the lowered and operativeposition as illustrated in FIG. 3, the back of the plow blade 51 will bein contact with the angled corner 53 of plates 45. Also, when the plowis in its operative position the abutment or projection 48 of the pivotbracket 33 will be in contact with the underside stopping surface of theplow support bottom plate 41.

The plow 30 is connected with the first or outer end door operatinglevers 25 by means of the lever connecting linkage 54 as illustrated inFIGS. 2, 3 and 4. A loop 55 is fixedly attached to the transverseportion 490 of the plow blade 49. Through this loop 55 is attached achain link 56 which has a connecting rod 57 attached to it. Thisconnecting rod 57 communicates with a loop 58 attached to the first dooroperating lever 25. Also attached to the first outer end lever 25 aswell as to the intermediate door operating levers 25 is a connectinglinkage means 25a for connection with the hopper doors 16. Each first orouter end lever 25 has a lever pivot means 26 including a lever pivotpin 27, lever pivot brackets 28 affixed to the center sill 14 with thelever pivot pin 27 communicating between openings in the pivot bracket28 and openings 27a in the lever 25. The door operating levers extendthrough longitudinally spaced openings 29 in the center sill 14.

With reference to FIGS. 6-8 the plow of the previous embodiment has beenaltered to provide for a converging plow blade arrangement asdistinguished from the diverging plow blade arrangement of the firstembodiment. The same reference characters will be applied to themodified form where the same structure exists in both embodiments anddifferent characters are provided to illustrate the difference in thetwo embodiments. An end structure 62 has been welded at each end of eachplow 30 to make a plow structure 303. Each end structure 62 on each endof the plow comprises a top plate 60, an end cap or plate 61, anintermediate transverse shed plate 63, a diagonal shed plate 64, a backplate 65 and a bottom plate 66. The transverse shed plate 63 and thediagonal shed plate 64 are both sloped downwardly and forwardlyattendant to diverting ore on the rails inwardly between the tracks.

THE OPERATION Referring to FIG. I, the power cylinders 24 are energizedto operate the drive links 23 and the door operating levers 25 whichmove longitudinally towards each other and towards the center of thecar. Such movement of the drive links 23 results in a rotation of thedoor operating levers 25; this rotation produces an opening and closingof the hopper doors 16. Referring now to FIGS. 1 and 4. upon opening ofthe hopper car doors the first door operating lever 25 (at extreme rightin FIG. 1) which is connected with the plow 30 will rotate about itspivot pin 27 in a counter-clockwise direction and in so doing lower theplow 30 to the surface of the car rails 19. In this lowering operationthe plow pivot bracket 33 pivots about the plow support 31 by way of theupper pivot means 34, thus lowering the plow 30 to the surface of thecar rails 19. The pivot bracket 33 will cease rotation when the bracketpivot projection 48 comes in contact with the bottom plate or stop 41 ofthe plow support 3]. When the pivot bracket has ceased rotation the plow30 will pivot about the lower pivot means 35 until the plow blade lipsor wipers 52 contact the rails 19. The position of the plow ontermination of rotation of the pivot bracket 33 is depicted by thedotted lines outlining the plow in FIG. 3.

When the plow has been lowered into its operative position asillustrated in FIG. 3 movement of the hopper car to which the plow isattached will cause the angled deflecting members 4% of the plow 30 toclear discharged lading from the surface of the rails 19 and thetransverse portion 490 to clear lading from the area between the rails.The plow blade lips 52 enable the plow 30 to pivot about the lower pivot35 when an immovable obstruction such as misaligned adjacent sections ofrailway track are encountered. Should the plow pivot further, as wherethere is a gap between two rail portions, the back part 51 of the plowwill engage the front bevelled surface 53 of plates or arms 45 to limitfurther swinging of the plow. Since two plows 30 are employed per hoppercar the plows will clear the tracks ahead of the wheels 20 trailingbehind the plow regardless of the direction the car is traveling whenthe hoppers are discharged. The plow trails the discharging hoppers inthe direction of travel of the car.

Upon closing of the hopper doors 16 the power cylinders 24 move theirrespective drive links 23 away from the center of the car and towardsthe power cylinders 24. As illustrated in FIG. 3 this movement of thedrive link 23 will produce a clockwise rotation of the door operatinglevers 25 resulting in a movement of the right end door operating lever25 (see FIG. I) which raises the plow 40 from the surface of the tracks19. This raised or inoperative position is illustrated in FIG. 4.Referring again to FIG. 3 it is noticed that when the right end dooroperating lever 25 begins rotation in a clockwise direction upon closingof the hopper doors 16, the plow 30 when being raised from the surfaceof the rails 19 will pivot initially about the bracket 33 via lowerpivot means 35 until the back 5! of the plow blade 49 comes in contactwith the front surface 530 of the plates 45 of the pivot bracket 33.When this contact occurs the plow 30 and the plow pivot bracket 33 willmove as a unit and rotate about the upper pivot 34 until rotation of thefirst door operating lever 22b is completed. Thus portions 53 and 53a ofplates 45 determine the amount of rotation of the plow 30 or 30a withrespect to the bracket 33.

The trailing plow 30 with the diverging or deflecting blade portions 4%(in direction of plow travel) directs the ore or lading being dischargedfrom the hopper outwardly of the railroad tracks or rails whereas thetrailing plow 300 with converging deflecting blade portions (indirection of plow travel) of the modification directs the ore or ladingbeing discharged from the hopper inwardly between the rails.

The foregoing description and drawings are given merely to explain andillustrate the invention and the invention is not to be limited thereto,except insofar as the appended claims are so limited, since thoseskilled the art who have the disclosure before them will be able to makemodifications and variations therein without departing from the scope ofthe invention.

What is claimed is:

l. A railroad hopper car comprising:

truck means,

hopper means having discharge door means,

door operating mechanism for opening and closing said hopper door means,

plow means for wiping railroad tracks and being disposed rearwardly ofthe hopper means and inwardly of the truck means in the direction of cartravel,

power means operatively connectible with said door operating mechanism,

said door operating mechanism having linking means connecting with saiddoor means and said plow means for operation of the door means and theplow means whereby when the door means are open the plow means is in thelowered wiping position and when the door means are closed the plowmeans is in the elevated out-of-use position,

plow support structure depending from said car and pivotally carryingsaid plow means therebelow,

plow carrying bracket means pivotally depending from the plow supportstructure for allowing the plow means to be moved from a down inuseposition to a raised out-of-use position,

said plow means pivotally depending from said plow bracket means formovement between the in use position and the out-of-use position.

said plow means and said bracket means being provided with first stopmeans for engagement of the plow means with said bracket means duringelevation of the plow means in one direction to limit relative rotationof the plow means with respect to the bracket means and said bracketmeans and said support structure being provided with second stop meanslimiting upward pivoting of said bracket means in the lowered positionof the plow means, said plow means pivoting toward said hopper means ingoing to the raised position of the plow means and said plow meanspivoting away from said hopper means in going to the lowered position ofsaid plow means.

2. The invention according to claim 1, and

said plow means being provided with generally upright transverselaterally opposed inclined plow blade portions adapted for engagementwith lading dispelled from the hopper means and extendable over therailroad tracks for clearing of lading therefrom.

3. The invention according to claim 2, and

each of said blade portions being provided with a lading deflecting partdiverging away from said hopper means and in a direction opposite thedirection of travel of the car.

4. The invention according to claim 2, and

each of said blade portions being provided with a lading deflecting partconverging toward said hopper means and in the direction of travel ofthe car.

5. The invention according to claim 1, and

said plow means having wiper means adapted for engagement with therailroad tracks.

6. The invention according to claim 1, and

center sill means mounted on said car,

said linking means being pivotally mounted on said center sill and saidplow support structure being fixedly attached to the under side of saidcenter sill.

7. The invention according to claim 1, and

said linking means having door opening arms pivotally connected theretoand with the doors and having a connection means pivotally connectingwith said plow means.

8. The invention according to claim 5, and

said wiper means in the direction of travel having a forwardly extendingportion extending therefrom to override an obstruction on the railroadtrack and thereby pivoting the plow means.

9. The invention according to claim 1, and

said plow means and said bracket means being provided with third stopmeans engaging said bracket means to limit rotation of the plow meanswith respect to the bracket means in the other direction in the loweredposition of the plow means,

said first stop means providing a first inclination of the plow meanswith respect to the bracket means and said third stop means providing asecond different inclination of the plow means with respect to thebracket means, whereby in the lowered position of the plow means thewiper means is positioned for effective wiping of the rail means and inthe elevated position of the plow means the moment length of the bracketmeans is effective to reduce the power stroke of the power means becauseof the pivoting of the bracket means with respect to said supportstructure.

10. The invention according to claim I, and

third stop means being provided for said bracket means and plow meansengaging said bracket means to limit rotation of the plow means withrespect to the bracket means in the other direction in the loweredposition of the plow means.

ll. The invention according to claim 1, and

the movement of said power means being in a direction opposite to themovement of said pivotal plow means and said pivotal bracket means.

12. A railroad hopper car comprising:

hopper means having discharge door means,

door operating mechanism for opening and closing said hopper door means,

plow means for wiping railroad tracks and being disposed rearwardly ofthe hopper means in the direction of car travel,

motive power means operatively connecting with said door operatingmechanism,

said door operating mechanism having linking means connecting with saiddoor means and said plow means for concurrent operation of the doormeans and the plow means whereby when the door means are open the plowmeans is in the lowered wiping position and when the door means areclosed the plow means is in the elevated out-of-use position,

plow support structure depending from said car,

center sill means mounted on said car,

said linking means being pivotally mounted on said center sill and saidplow support structure being fixedly attached to the under side of saidcenter sill,

plow carrying bracket means pivotally depending from said plow supportstructure,

said plow means pivotally depending from said plow bracket means,

said linking means having door opening arms pivotally connected theretoand having a connection means pivotally connecting with said plow means,

said plow means having wiper means adapted for engagement with the railroad tracks,

said plow means and said bracket means being provided with first stopmeans for engagement of the plow means with said bracket means duringelevation of the plow means in one direction to limit relative rotationof the plow means with respect to the bracket means and said plow meansand said bracket means being provided with second stop means engagingsaid bracket means to limit rotation of the plow means with respect tothe bracket means in the other direction in the lowered position of theplow means,

said first stop means providing a first inclination of the plow meanswith respect to the bracket means and said second stop means providing asecond different inclination of the plow means with respect to thebracket means, whereby in the lowered position of the plow means thewiper means is positioned for effective wiping of tracks and in theelevated position of the plow means the moment length of the bracketmeans is effective to reduce the power stroke of the power means becauseof the pivoting of the bracket means with respect to said supportstructure,

and third stop means being provided for said bracket means and saidsupport structure limiting pivot of said bracket means in said loweredposition of the plow means, said plow means pivoting toward said hoppermeans in the raised position of the plow means and said plow meanspivoting away from said hopper means in the lowered position of saidplow means.

13. In a railroad hopper car comprising:

hopper means having pivotally interconnected overlapping master andslave discharge doors,

said master door having drive linkage being drivingly connected with theslave door for opening and closing same in accordance with opening andclosing of the master door,

door operating mechanism for opening and closing said hopper doorsincluding longitudinally extending drive means,

plow means for wiping rails disposed rearwardly of the hopper means inthe direction of car travel,

power means operatively connecting with said door operating mechanism,

said door operating mechanism having linking means connecting with saiddrive means and with said doors and said plow means for operation of thedoor means and the plow means whereby when the doors are open the plowmeans is in the lowered wiping position and when the door means areclosed the plow means is in the elevated out-of-use position,

plow support structure depending from said car,

plow carrying bracket means pivotally depending from said plow supportstructure,

said plow means pivotally depending from said plow bracket means,

said master door having an edge portion overlapping said slave door,

said linking means having door opening arms connecting with said edgeportion and holding said edge portion in locked supporting relation withthe slave door when the doors are closed and having means connectingwith said plow means,

said plow means having wiper means adapted for engagement with railroadtrack,

plow carrying bracket means pivotally depending from the plow supportstructure for allowing the plow means to be moved from a down in-useposition to a raised out-of-use position,

said plow means pivotally depending from said plow bracket means formovement between the in-use position and the out-of-use position,

said plow means and said bracket means being provided with first stopmeans for engagement of the plow means with said bracket means duringelevation of the plow means in one direction to limit relative rotationof the plow means with respect to the bracket means and said bracketmeans and said support structure being provided with second stop meanslimiting upward pivoting of said bracket means in the lowered positionof the plow means, said plow means pivoting toward said hopper means ingoing to the raised position of the plow means and said plow meanspivoting away from said hopper means in going to the lowered position ofsaid plow means.

14. The invention according to claim 13, and

said linking means being in an over center locking position with saiddrive means with the door means in the closed position.

15. The invention according to claim l3, and

said drive means providing over center locking with the doors in theclosed position.

1. A railroad hopper car comprising: truck means, hopper means havingdischarge door means, door operating mechanism for opening and closingsaid hopper door means, plow means for wiping railroad tracks and beingdisposed rearwardly of the hopper means and inwardly of the trucK meansin the direction of car travel, power means operatively connectible withsaid door operating mechanism, said door operating mechanism havinglinking means connecting with said door means and said plow means foroperation of the door means and the plow means whereby when the doormeans are open the plow means is in the lowered wiping position and whenthe door means are closed the plow means is in the elevated out-of-useposition, plow support structure depending from said car and pivotallycarrying said plow means therebelow, plow carrying bracket meanspivotally depending from the plow support structure for allowing theplow means to be moved from a down in-use position to a raisedout-of-use position, said plow means pivotally depending from said plowbracket means for movement between the in-use position and theout-of-use position, said plow means and said bracket means beingprovided with first stop means for engagement of the plow means withsaid bracket means during elevation of the plow means in one directionto limit relative rotation of the plow means with respect to the bracketmeans and said bracket means and said support structure being providedwith second stop means limiting upward pivoting of said bracket means inthe lowered position of the plow means, said plow means pivoting towardsaid hopper means in going to the raised position of the plow means andsaid plow means pivoting away from said hopper means in going to thelowered position of said plow means.
 2. The invention according to claim1, and said plow means being provided with generally upright transverselaterally opposed inclined plow blade portions adapted for engagementwith lading dispelled from the hopper means and extendable over therailroad tracks for clearing of lading therefrom.
 3. The inventionaccording to claim 2, and each of said blade portions being providedwith a lading deflecting part diverging away from said hopper means andin a direction opposite the direction of travel of the car.
 4. Theinvention according to claim 2, and each of said blade portions beingprovided with a lading deflecting part converging toward said hoppermeans and in the direction of travel of the car.
 5. The inventionaccording to claim 1, and said plow means having wiper means adapted forengagement with the railroad tracks.
 6. The invention according to claim1, and center sill means mounted on said car, said linking means beingpivotally mounted on said center sill and said plow support structurebeing fixedly attached to the under side of said center sill.
 7. Theinvention according to claim 1, and said linking means having dooropening arms pivotally connected thereto and with the doors and having aconnection means pivotally connecting with said plow means.
 8. Theinvention according to claim 5, and said wiper means in the direction oftravel having a forwardly extending portion extending therefrom tooverride an obstruction on the railroad track and thereby pivoting theplow means.
 9. The invention according to claim 1, and said plow meansand said bracket means being provided with third stop means engagingsaid bracket means to limit rotation of the plow means with respect tothe bracket means in the other direction in the lowered position of theplow means, said first stop means providing a first inclination of theplow means with respect to the bracket means and said third stop meansproviding a second different inclination of the plow means with respectto the bracket means, whereby in the lowered position of the plow meansthe wiper means is positioned for effective wiping of the rail means andin the elevated position of the plow means the moment length of thebracket means is effective to reduce the power stroke of the power meansbecause of the pivoting of the bracket means with respect to saidsupport structure.
 10. The invention according to claim 1, and thirdstop means being pRovided for said bracket means and plow means engagingsaid bracket means to limit rotation of the plow means with respect tothe bracket means in the other direction in the lowered position of theplow means.
 11. The invention according to claim 1, and the movement ofsaid power means being in a direction opposite to the movement of saidpivotal plow means and said pivotal bracket means.
 12. A railroad hoppercar comprising: hopper means having discharge door means, door operatingmechanism for opening and closing said hopper door means, plow means forwiping railroad tracks and being disposed rearwardly of the hopper meansin the direction of car travel, motive power means operativelyconnecting with said door operating mechanism, said door operatingmechanism having linking means connecting with said door means and saidplow means for concurrent operation of the door means and the plow meanswhereby when the door means are open the plow means is in the loweredwiping position and when the door means are closed the plow means is inthe elevated out-of-use position, plow support structure depending fromsaid car, center sill means mounted on said car, said linking meansbeing pivotally mounted on said center sill and said plow supportstructure being fixedly attached to the under side of said center sill,plow carrying bracket means pivotally depending from said plow supportstructure, said plow means pivotally depending from said plow bracketmeans, said linking means having door opening arms pivotally connectedthereto and having a connection means pivotally connecting with saidplow means, said plow means having wiper means adapted for engagementwith the rail road tracks, said plow means and said bracket means beingprovided with first stop means for engagement of the plow means withsaid bracket means during elevation of the plow means in one directionto limit relative rotation of the plow means with respect to the bracketmeans and said plow means and said bracket means being provided withsecond stop means engaging said bracket means to limit rotation of theplow means with respect to the bracket means in the other direction inthe lowered position of the plow means, said first stop means providinga first inclination of the plow means with respect to the bracket meansand said second stop means providing a second different inclination ofthe plow means with respect to the bracket means, whereby in the loweredposition of the plow means the wiper means is positioned for effectivewiping of tracks and in the elevated position of the plow means themoment length of the bracket means is effective to reduce the powerstroke of the power means because of the pivoting of the bracket meanswith respect to said support structure, and third stop means beingprovided for said bracket means and said support structure limitingpivot of said bracket means in said lowered position of the plow means,said plow means pivoting toward said hopper means in the raised positionof the plow means and said plow means pivoting away from said hoppermeans in the lowered position of said plow means.
 13. In a railroadhopper car comprising: hopper means having pivotally interconnectedoverlapping master and slave discharge doors, said master door havingdrive linkage being drivingly connected with the slave door for openingand closing same in accordance with opening and closing of the masterdoor, door operating mechanism for opening and closing said hopper doorsincluding longitudinally extending drive means, plow means for wipingrails disposed rearwardly of the hopper means in the direction of cartravel, power means operatively connecting with said door operatingmechanism, said door operating mechanism having linking means connectingwith said drive means and with said doors and said plow means foroperation of the door means and the plow means whereby when the doorsare open thE plow means is in the lowered wiping position and when thedoor means are closed the plow means is in the elevated out-of-useposition, plow support structure depending from said car, plow carryingbracket means pivotally depending from said plow support structure, saidplow means pivotally depending from said plow bracket means, said masterdoor having an edge portion overlapping said slave door, said linkingmeans having door opening arms connecting with said edge portion andholding said edge portion in locked supporting relation with the slavedoor when the doors are closed and having means connecting with saidplow means, said plow means having wiper means adapted for engagementwith railroad track, plow carrying bracket means pivotally dependingfrom the plow support structure for allowing the plow means to be movedfrom a down in-use position to a raised out-of-use position, said plowmeans pivotally depending from said plow bracket means for movementbetween the in-use position and the out-of-use position, said plow meansand said bracket means being provided with first stop means forengagement of the plow means with said bracket means during elevation ofthe plow means in one direction to limit relative rotation of the plowmeans with respect to the bracket means and said bracket means and saidsupport structure being provided with second stop means limiting upwardpivoting of said bracket means in the lowered position of the plowmeans, said plow means pivoting toward said hopper means in going to theraised position of the plow means and said plow means pivoting away fromsaid hopper means in going to the lowered position of said plow means.14. The invention according to claim 13, and said linking means being inan over center locking position with said drive means with the doormeans in the closed position.
 15. The invention according to claim 13,and said drive means providing over center locking with the doors in theclosed position.